<Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="TextBlockDemo" SizeToContent="WidthAndHeight" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" d:DesignHeight="118" d:DesignWidth="596">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
        </Grid.RowDefinitions>

        <TextBlock FontSize="16" HorizontalAlignment="Center" VerticalAlignment="Center">
            <Bold>Hello</Bold> TextBox  
            from 
            <Italic><Bold>WSU</Bold></Italic> (ignore                          extra               spaces)
        </TextBlock>

        <TextBlock FontSize="16" HorizontalAlignment="Center" VerticalAlignment="Center"
                   Grid.Row="1" xml:space="preserve">
            Hello       TextBox       from       WSU       <Bold>(Preserve Spaces)</Bold>
        </TextBlock>

    </Grid>
</Window>